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Pulling Grips

Pulling grips are flexible steel wire mesh sleeves that hold a cable, kaulahao, pipe or duct so it can be pulled, lowered or tensioned. Slide the mesh over the end, hoʻopaneʻe i ka maka, and the weave closes radially on the jacket: the grip tightens as the pull load rises, so nothing has to be clamped or bolted to the cable. We braid them in our own workshop in galvanised steel or AISI 304 / 316 uwea kuhiliʻole, for cable from 9 mm i 160 mm, with single, papalua, hikiwawe, nā maka kaʻapuni a i ʻole ka hoʻoneʻe ʻana.

This page covers the range as a whole: how the mesh holds, which of the five constructions suits the pull you are doing, how to size a grip from the cable diameter and the expected line pull, and what the capacity on the label actually means. Each construction has its own page, linked from the table below.

How Wire Mesh Pulling Grips Hold a Cable

There is no mechanism inside a pulling grip. The grip is the weave, and it works in three stages:

1. Holoi ma. E hoʻonui i ka mesh a hoʻokuʻu iā ia ma luna o ka hopena o ke kaula a hiki i ke kaula i ka maka. The mesh has to sit on the full gripping length, not just on the cable tip.
2. Tension. Load on the eye lengthens the tube slightly and contracts it radially. Every wire in the weave closes on the jacket at once, so the pulling force becomes a uniform clamping force along the whole mesh.
3. Hoʻokuʻu. E hoʻolohi i ka laina a hoʻokuʻu i ka mesh i mua; the weave opens and the grip slides off. ʻAʻohe mea hana, ʻaʻohe hōʻailona, no cut jacket.

Because the load is carried by friction spread over the mesh length, capacity comes from engagement length and the number of mesh layers, not from wire gauge alone. A 3.0 mm wire in a 300 mm mesh holds less than a 2.0 mm wire in a 1200 mm maka. That is also why a pulling grip can drag a lead-sheathed or thin-wall cable that a clamp would crush, and why the same grip releases without leaving a mark.

Five Constructions, One Principle

Every type below uses the same wire mesh principle. What changes is the head, the way the grip closes, and the material – and those three things decide which pull it suits.

Material is a separate choice: the closed-head range is available in galvanised steel, AISI 304 a i ʻole 316 kuhiliʻole.

Sizing a Pulling Grip: Three Numbers

Three measurements decide the model, and getting them wrong is the usual reason a grip slips on the first pull.

• The true outside diameter where the mesh will sit. Measure over the jacket, over any tape or bedding, and over the whole bundle if you are pulling more than one cable. Nominal size is not the gripping size.
• The mesh length you can engage. A grip needs at least four to five times the cable diameter in mesh contact. Less than that and the load concentrates at the head.
• The expected line pull at the worst point of the run – start of pull, through bends, up a slope. The published capacity is a working load; keep the pull below it and add margin on a wet, greasy or polished jacket.

Standard range shown. Mesh up to 3000 mm and diameters outside this table are made to order.

Standard Range and Pulling Capacity

The chart below is the standard galvanised range. Capacity is quoted as a working load with a 5:1 mea palekana ma ka ikaika haki, measured with the mesh fully engaged on a clean, dry cable.

A wet, oily or highly polished jacket reduces friction and therefore capacity – confirm the rating for those conditions before the first pull.

Pulling Grips – Hōʻike

Eye and Head Options

The head decides how the pulling line meets the grip, and it is the part that has to pass a duct mouth, a sheave or a manhole cover.

• Single braided eye – hookahi loop, for a straight pull in a clean duct.
• Maka lua – two loops for lashing, or for two lines pulled in line.
• Maka hikiwawe – a swaged ferrule eye that articulates, so the grip stays aligned through bends.
• Maka hulili – lets the cable spin out its own lay on long runs without twisting the mesh.
• ʻO ka maka offset – keeps the line clear of the duct wall where headroom is tight.
• Maka ʻuʻuku – a hard wear surface inside the eye where it rubs a hook, shackle or winch line.

Galvanised, Stainless or Non-Metallic

Material is decided by the environment the grip works in, not by the pull load.

What the Capacity on the Label Means

Every grip is rated at a 5:1 mea palekana on its breaking strength, so a CPS-50 with a 2,500 kg capacity has been built to hold about 12,500 kg before it fails. ʻO ka 2,500 kg figure is the working load: it is what you are permitted to pull, not what the grip can survive.

Two practical consequences. Ka mua, do not use the breaking strength as a target – a grip taken to its break has already damaged the cable and the mesh. Ka lua, a pulling grip is a pulling and holding tool, not a lifting sling: unless the model is rated and marked for lifting, keep it on the horizontal pull, the duct and the cable drum.

Fitting and the First Pull

1. E nānā i ka mesh, maka a me ka ferrule ma mua o kēlā me kēia hoʻohana – uwea naha, a deformed eye or a slipped ferrule retire the grip.
2. Expand the mesh fully and slide it on until the cable end reaches the eye. Half-engagement is the most common cause of a pull that lets go.
3. E mālama i ka huki ma ka laina me ke axis mesh; side loading concentrates the grip on one edge of the weave.
4. Take up the slack slowly and watch the mesh close. If it slips at low load, the grip is too large for the diameter or the jacket is too smooth – stop and re-size rather than pulling harder.
5. Mai ʻoi aku ma mua o ka mana helu, and never stand in line with a loaded pull line.

Nānā a hoʻomaha

• Broken or lifted wires anywhere in the weave – the grip has lost section and capacity.
• A deformed, stretched or opened eye, or a ferrule that has slipped on the rope.
• Corrosion pitting on galvanised mesh, or a coating worn through to bare wire.
• Mesh that no longer closes on the cable, or that has been pulled out of shape.
• Any grip involved in a slip or an overload: hoomaha ia, do not re-use it on a lighter job.

Record the pulls and the damage. A grip is cheap next to the cable it is pulling, and a mesh that has been dragged through a rough duct mouth is not the same grip it was on the first pull.

Where Pulling Grips Are Used

• Huki iā LV, MV a me HV uwea mana, uwea hoʻomalu a me ke kaula fiber optic ma o nā auwai, nā auwaha a me nā mea ala
• Huki puolo uwea, kaula uwea a me na kookoo me na winch, kapena a me ka huki uwea
• Ka lawelawe ʻana i ka paipu kila, PVC and PE pipe, auwai, hose a ducting
• Supporting or lowering smooth cylindrical loads where a clamp would crush or mark the surface
• Telecom, pono, auwai, substation, offshore and marine installation work

Braiding, Ka ho'āʻo a me ka palapala

Lift Sling Rigging Co., Ua hoʻopaʻa ʻia ʻo Ltd i ke kaula uea a me ka mesh rigging ma Taizhou, Jiangsu for close to thirty years. Every grip is braided from wire we select, wili ʻia ka maka i ka lōʻihi i hoʻopaʻa ʻia, a hoʻouka ʻia nā laʻana ma mua o ka hoʻouna ʻana. Hiki ke hoʻonohonoho ʻia nā hōʻike nānā mua o ka hoʻouna ʻana a me nā ʻaoʻao ʻekolu ma ke noi; kā mākou certification page lists the management systems behind the process.

OEM is routine: lōʻihi maka, mesh diameter, wire gauge, ʻano maka, coated colour for size coding, logo marking and private-label packing. Send the cable diameter and the pull load and we will quote the model rather than a range.

Nīnau pinepine

What are pulling grips used for?

Holding a cable, kaulahao, pipe or duct so it can be pulled, lowered or tensioned. The mesh closes on the jacket as the pull load rises, which spreads the gripping force along the cable instead of clamping it at one point.

Is a pulling grip the same as a cable sock?

ʻAe. Pulling grip, sock uwea, kāʻei kaula, mesh grip and pulling stocking all describe the same article: a braided wire mesh tube with an eye at the head. The names come from different trades – cable jointers say sock, riggers say grip.

Pehea wau e koho ai i ka nui?

Measure the true outside diameter where the mesh will sit, then check that the model’s range covers it and that you have at least four to five times the diameter in mesh engagement. A grip that is too large slips; one that is too small will not slide on.

How much can a pulling grip hold?

The standard range runs from 750 kg on the CPS-16 to 8,000 kg on the CPS-160, quoted as working loads at a 5:1 mea palekana. Pili ka nui ma luna o ka ʻili kelepona, mesh length and the number of mesh layers, so confirm the figure for your cable before the first pull.

Will a wire mesh grip damage the cable jacket?

Not in normal use. The load is distributed over the mesh length rather than concentrated, which is why grips are used on lead sheath, thin-wall insulation and fibre. No ka pena, polished or stainless pipe, specify a PVC or rubber coated mesh to avoid surface marking.

Can I fit one to a cable that is already installed?

ʻAe – use a lace-up or split mesh grip, which is wrapped around the cable and laced closed instead of being slid over a free end. E nana i ka lace-up hoisting grips ʻaoʻao.

Can a pulling grip be used for lifting?

Only if the model is rated and marked for lifting. A standard pulling grip is a pulling and holding tool; using an unrated grip as a lifting sling puts a factor of five between the load and a failure that no one has calculated.

Can you make a custom length, eye or branded grip?

ʻAe. Mesh length from 300 mm i 3000 mm, cable diameters outside the standard range, hoʻokahi, papalua, hikiwawe, rotating, offset or thimble eyes, coated colours for size coding, logo marking and private-label packing.

Request a Pulling Grip Quotation

Send the cable or pipe diameter, the mesh length you can engage, the eye type and the expected line pull – plus the environment, if it is wet, salty or likely to mark the surface. We will come back with the model, the capacity and a factory-direct price.

Send your pulling grip specification

Nā Huahana Pili

• Socks huki uwea – poʻo paʻa, maka hoʻokahi
• Huki uwea maka lua
• Offset maka uwea huki paʻa
• Lace-up hosting grips – for installed cable
• Non-metallic cable pulling grips – no metal near conductors
• ʻO ke kaula kila kuhiliʻole koʻikoʻi e huki ana
• All wire rope slings and pulling equipment